Suppose that a cash flow is recorded as $$10,000$ at time $1,$ $$9,700$ at time $2,$ $$9,400$ at time $3$ and $$9,100$ at time $4.$ Which of the following is correct?

g$=-$$$300$

G $=$ $$300$

G $=-$$$300$

g$=$ $$300$

P$.$S: g and G are two different symbols.